#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <assert.h>
int a;
int my_strlen(const char * arr)
{
	assert(arr != NULL);
	int count=0;
	while (*arr++ != '\0')
	{
		count++;
	
	}
	a = count;
	return count;
}


int main()
{   
	char arr[] = "hello";
	my_strlen(arr);
	printf("%d", a);
	return 0;
}